Last updated on June 20th, 2018 at 03:34 pm
This page lists all domains that are banned (by Spamassassin) from sending email to addresses on this server for repeated spam. This is in addition to domains listed in popular block lists.
I’m seriously considering banning the entire China subnet of IP addresses. 99.9% of the hacking attempts are coming from there. Such a ban would be at the firewall, not postfix.